In this shoot 'em up the player has to fight off four assault waves consisting of different enemy types until he reaches a huge UFO. After destroying the protective plates guarding the UFO's pilot in his cockpit the player can kill the pilot. The game starts anew with harder enemies.

In this shoot 'em up the player has to fight off four assault waves consisting of different enemy types until he reaches a huge UFO. After destroying the protective plates guarding the UFO's pilot in his cockpit the player can kill the pilot. The game starts anew with harder enemies.